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-rw-r--r--arch/Kconfig47
1 files changed, 47 insertions, 0 deletions
diff --git a/arch/Kconfig b/arch/Kconfig
index ad89a33d8c6..364c6dadde0 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -27,18 +27,65 @@ config KPROBES
for kernel debugging, non-intrusive instrumentation and testing.
If in doubt, say "N".
+config HAVE_EFFICIENT_UNALIGNED_ACCESS
+ def_bool n
+ help
+ Some architectures are unable to perform unaligned accesses
+ without the use of get_unaligned/put_unaligned. Others are
+ unable to perform such accesses efficiently (e.g. trap on
+ unaligned access and require fixing it up in the exception
+ handler.)
+
+ This symbol should be selected by an architecture if it can
+ perform unaligned accesses efficiently to allow different
+ code paths to be selected for these cases. Some network
+ drivers, for example, could opt to not fix up alignment
+ problems with received packets if doing so would not help
+ much.
+
+ See Documentation/unaligned-memory-access.txt for more
+ information on the topic of unaligned memory accesses.
+
config KRETPROBES
def_bool y
depends on KPROBES && HAVE_KRETPROBES
+config HAVE_IOREMAP_PROT
+ def_bool n
+
config HAVE_KPROBES
def_bool n
config HAVE_KRETPROBES
def_bool n
+#
+# An arch should select this if it provides all these things:
+#
+# task_pt_regs() in asm/processor.h or asm/ptrace.h
+# arch_has_single_step() if there is hardware single-step support
+# arch_has_block_step() if there is hardware block-step support
+# arch_ptrace() and not #define __ARCH_SYS_PTRACE
+# compat_arch_ptrace() and #define __ARCH_WANT_COMPAT_SYS_PTRACE
+# asm/syscall.h supplying asm-generic/syscall.h interface
+# linux/regset.h user_regset interfaces
+# CORE_DUMP_USE_REGSET #define'd in linux/elf.h
+# TIF_SYSCALL_TRACE calls tracehook_report_syscall_{entry,exit}
+# TIF_NOTIFY_RESUME calls tracehook_notify_resume()
+# signal delivery calls tracehook_signal_handler()
+#
+config HAVE_ARCH_TRACEHOOK
+ def_bool n
+
config HAVE_DMA_ATTRS
def_bool n
config USE_GENERIC_SMP_HELPERS
def_bool n
+
+config HAVE_CLK
+ def_bool n
+ help
+ The <linux/clk.h> calls support software clock gating and
+ thus are a key power management tool on many systems.
+